Hydrothermal Synthesis and Structure Characterization of a Novel 4,4′-Bipyridine Bridging Dumbbell-like Dimeric Pentamolybdate  

作　　者：王子梁 魏林恒 王敬平 

机构地区：[1]School of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, China [2]College of Environment and Planning, Henan University, Kaifeng 475001, China

出　　处：《Chinese Journal of Structural Chemistry》2005年第9期991-996,共6页结构化学（英文）

基　　金：Henan Innovation Project for University Prominent Research Talents and the Natural Science Foundation of Henan Province

摘　　要：A 4, 4＇-bipyridine bridging dumbbell-like dimeric pentamolybdate [4, 4＇-H2bipy]3[4,4＇-Hbipy]2[（Mo5O17）2（4,4＇-bipy）] has been synthesized by hydrothermal synthesis and characterized by elemental analysis, IR spectrum, UV spectrum, TG and X-ray crystallography. The title compound crystallizes in triclinic, space group PI with a=10.578（2）, b=11.047（2）, c=16.576（3） A°, a=79.86（3）, β=75.34（3）, γ=79.40（3）°, C60H58Mo10MoN12O34, Mr=2450.58, V=1824.8（6）A°^3, Z=1, Dr=2.230 g/cm^3, F（000） = 1194,μ= 1.757 mm^-1, the final R=0.0252 and wR=0.0559 for 5506 observed reflections with I〉2σ（I）. The structural analysis indicates that the title compound contains a novel polyanion [（Mo5O17）2（4,4＇-bipy）]^8-, in which two identical （Mo5O17）^4- anions are buttres sed by a 4,4＇-bipyridine molecule through Mo-N bond.A 4, 4＇-bipyridine bridging dumbbell-like dimeric pentamolybdate [4, 4＇-H2bipy]3[4,4＇-Hbipy]2[（Mo5O17）2（4,4＇-bipy）] has been synthesized by hydrothermal synthesis and characterized by elemental analysis, IR spectrum, UV spectrum, TG and X-ray crystallography. The title compound crystallizes in triclinic, space group PI with a=10.578（2）, b=11.047（2）, c=16.576（3） A°, a=79.86（3）, β=75.34（3）, γ=79.40（3）°, C60H58Mo10MoN12O34, Mr=2450.58, V=1824.8（6）A°^3, Z=1, Dr=2.230 g/cm^3, F（000） = 1194,μ= 1.757 mm^-1, the final R=0.0252 and wR=0.0559 for 5506 observed reflections with I〉2σ（I）. The structural analysis indicates that the title compound contains a novel polyanion [（Mo5O17）2（4,4＇-bipy）]^8-, in which two identical （Mo5O17）^4- anions are buttres sed by a 4,4＇-bipyridine molecule through Mo-N bond.

关 键 词：POLYOXOMETALATES hydrothermal synthesis molybdenum 

分 类 号：O621[理学—有机化学]